Radiator of aeroplane engines



July 26, 1938. M. LACHASSE RADIATOR OFAEROPLANE ENGINES Filed Dec. 9, 1956 2 Sheets-Sheet 1 e 5 5 M c0 mm e m mv 1 J M 5 3. v a Q L 7. I- Z 9 2 Z July '26, 1938. M. LACHASSE RADIATOR OF AEROPLANE ENGINES 2 Sheets-Sheet 2 Filed Dec. 9, 1936 Fly. 6

5 M i Ce LcLc qqsse IN VLNTOE WWA Patented July 26, less TENT OFFEE to Societe Anomyme Neuilly-sur- Seine, France des Appareils G. A. E...

France, a corporation oil Application December 9, 1936, Serial No. 114,915

In France December 24, 1935 4L Claims.

The present invention has for its object to produce a. radiator for the cooling of aeroplane engines which offers a minimum resistance against advance through the air.

A further object is to provide a radiator having a relatively small front surface and a great depth which radiator is easy to manufacture and shows a maximum safety as regards watertightness.

Still further objects are to facilitate the possible repairs in radiators of great depth, and to avoid the construction of headers .of too great a capacity in order to prevent risks of bursting.

The radiators enabling the aforesaid objects to be obtained have the features which will be apparent from the following description and the accompanying claims,

Radiators according to the invention are illustrated by way of example in the accompanying drawings in which:

Fig. 1 is a front view of a radiator built up of blade elements.

Fig. 2 is a plan view of said radiator.

Fig. 3 is aside elevation ofsaid radiator.

Fig. 1.

Fig. 5 is an enlarged section along the line 5-5 of Fig. 2'.

Fig. 6 is a section along the line S6 of Fig. 5. Fig. 7 is a partial perspective View of .a radiator element of Figs. 1 to 3.

.Fig. 8 is a front view of another radiator according to the invention.

The cooling radiator illustrated in Figs. 1 to 7 5 has radiating elements consisting of parallel blades which provideon the one hand between them spaces for the free passage of the cooling fluid and, on the other hand, spaces for the circulation of the fluid to be cooled.

40 The radiator essentially comprises a plurality of elements I l l juxtaposed to each other in the direction of the circulation of the current of air, moving in the direction of the arrow B. Each radiator element I I, I has a depth p 45 which permits ready access to all the members forming said element, for example for cleaning- 55 be cooled and a central header 3 for the outlet Fig. 4 is an. enlarged section along 46 of of the cooled liquid; the central header 3, however, can be omitted and, in this case, one of the side headers l serves for the inlet of the liquid to be cooled, whereas the other side header 2 is used as the outlet for the cooled liquid.

The radiating network interposed between the headers i, 2 and 3 comprises hollow parallel blades t arranged horizontally and providing between the free spaces.5 for the passage of the current of cooling air F.

Each of the headers l, 2, 8 is connected at its upper partto a tube 8 which, on the one hand, itself forms a header and on the other hand serves for the assembly of the various radiator elements l 6 l The tubes 8 of two adjacent radiator elements are connected to each other (Fig. 4) by male and female nipples ill, ll fitting into each other and clamping a sealing joint it between them. At

each end of the radiator the tubes t of the first and of the last elements are closed by a plug it.

The inlet and the outlet of the liquid to be cooled are effected by means of nipples I5, ll, l8 provided on the tubes 8 of one of the elements and arranged perpendicularly to said tubes.

Said inlet nipples l6 and ll and outlet nipple It need not be disposed upwardly, as shown in Figs. 1 to 3 of the drawings, but can be provided on the tubes 8 in any favourable position according to the particular installation.

In this manner, a very simple and tight connection between individual elements is obtained without rubber hoses and collars, and a considerable decrease in weight, bulk and cost of manufacture is obtained, while the safety is substantlally increased.

The hollow blades 4 ofthe radiating network are braced by longitudinal tubes of square cross section; said bracing tubes (Figs. 5 and 6) have a projecting end 22 which engages in the opening of the corresponding tube 22 of the adjacent radiator element. This arrangement holds the blades 4 of the various elements I I, l in mutual alignment.

The locking of the radiator elements thus assembled with each other is effected by rods or stays Ii, arranged in the axis of the tubes 8 8 8 clamping nuts l5 eflecting the locking and clamping the sealing joints l2 interposed between the connections In, H.

A second emptying header I9 is arranged in the lower part of the radiator. The headerv I9 is composedof the tubes I 9 I9 I9 corresponding to the individual radiator elements I I, l and communicates by means of theascending can be completed by outer clamping rods 2| arranged at the lower angles of the radiator elements I I", i (Fig.

The radiator is advantageously completed by filters 23 lodged in and projecting throughout the length of the individual tubes 8. Consequently the filters 23 have a great surface and can be easily dismounted for cleaning, or repairing by simply disconnecting the elements I, I whereby the interior of the headers 8 becomes accessible and the filters can be easilywithdrawn.

To sum up, a radiator of great depth is provided which is easy to keep up and to clean as the dismounting of the elements I I", l of the radiator can be efiected by simply unscrewing the clamping nuts from the stays i4, 2 i.

The repairing of any of the shallow radiatorelements 1 I, l is very simple since all the soldered points are easily accessible and the individual elements are of small'weight and bulk. Furthermore, if one of the radiator elements is deteriorated, the interchangeability of the elements permits a speedy replacement of the deteriorated element.

This arrangement renders it also possibleto add or to eliminate one or a plurality of elements for tuning up tests of the aeroplane or with respect to considerable variations of temperature,

such as occur between winter and summer.

Numerous modifications can be made to the radiator described above-by way of example. As shown for instance in Fig. 8, the radiating network can consist of tubes 35 (radiators known as honeycomb) In this figure, the headers 6 and I serve respectively for the inlet and outlet of a the liquid to be cooled. Y

what manner the same is to be performed, I declare that what I claim is:

1. In a cooling radiator for aeroplane engineai multiple elements, each comprising a radiating network having hollow blades of small depth, headers for the circulation of the cooling fluid,

. cross pieces between the headers of theindividual elements, bracing tubes having male and female other.

. hollow blades disposed parallel to the direction of movement, two headers for the inlet of the hot water and the outlet of the cooled water, tubular cylindrical end pieces for said headers disposed parallel to the direction of movement, cross pieces between the headers of the individual elements, nipples arranged in the tubular end pieces of said headers to establish a communication between the headers of one element and those of the adjacent element, and removable connecting means, arranged on each element and fixing the individual assembled elements to each other.

3. In a cooling radiator for aeroplane engines, multiple elements assembled consecutively to each other in the direction of their own depth, each element comprising a radiating network having cylindrical end pieces for said headers disposed parallel to the. direction of movement, cross pieces between the headers of the individual elements, nipples arranged in the tubular end pieces of said headers to establish a communication between the headers of one element and those of the adjacent element and removable connecting means disposed axially within said headers and fixing the latter and the multiple elements to each other.

4. In a cooling radiator for aeroplane engines, multiple elements assembled consecutively to each other in the direction of their own depth, each element comprising a radiating network having hollow blades disposed parallel to the direction of movement, two headers for the inlet of the hot water and the outlet of the cooled water, tubular end pieces for said headers disposed parallel to the direction of movement, cross pieces between the headers of the individual elements, nipples arranged in the tubular end pieces of said headers to establish a communication between the headers of one element and those of the adjacent element, bracing tubes disposed between the blades of the radiating network of each element and the bracing tubes of each element in engagement with the bracing tubes of the adjacent elements, and removable means mounted on each element for connecting juxtaposed multiple elements to each LOUIS MAURICE LACHASSE. 

